In essence, as everything is made of Atoms, human Beings can be present at two places at the same time. This concept has been explained in The Vaisesika system of Indian Philosophy under Dravya,loosely translated as Object. It has taken five thousand years for Science to validate this by Quantum Mechanics!
2.In this sense Parallel verse and the Multi verses exist simultaneously. In the former, at our level of existence we have many possible worlds depending on our intent to perceive. Also the Multi verse do have their Parallel verses depending on the ability of those who inhabit them to perceive. So there are many Multiverses in each of the possible , including ours. 3.This raises some interesting possibilities. a) If one were to go back in Time and sees himself in the past, what does it belong to? Parallel or Multiverse? b) Again, according to Hinduism Rebirth is certain. Let us look some example. I am 64 now. I should have died at least sixty four years ago. My children int he past birth must have cremated, buried my body and religious ceremonies should have been performed( It might nor have been performed as well).
There are two interpretations of the Lokas. One is that these are The Stages of mental development in a Spiritual Journey. Another is that these are Planes of Existence at other levels, complying with Laws that are unique to them, Including the Laws of Physics. Taking these to mean and comparing them with the Quantum Theory which states that there are other planes where things exist and they do not obey the Laws of our Earth's Physical laws. Latest findings indicate that the Multi verses are Infinite and they depend on the Perceiver and his ability to perceive them. Hinduism says exactly the same with Time being Cyclic. Read my Post on Cyclic Theory of Time.
Though it is a fact that Hinduism and the Systems of Indian Philosophy are the forerunners of Modern Thought, here I differ in that Our systems are ahead of the Modern Science as some of the theories they still have are wrong and Hinduism will be proved Right eventually, our people , even those who are supposed to be educated, will believe these statements. But they will, if they hear it from a Westerner!
But The ignorance is the impediment for Realization and Ganesha removes it. And Subramanya , in His six aspects, is the Best among those who realized Brahman, who taught His father, Shiva, the Pranava,. In Sanskrit if you add 'Su' as an affix , it indicates the best, He is Su-Brahmanya, Subramanya. Now enjoy the gret Meenakshi Pancharatna , where Adi Shanjkaracharya talks of Quantum and Indian Philosophy at the same time